diff --git a/packages/field/test-suites/FormatMixin.suite.js b/packages/field/test-suites/FormatMixin.suite.js
new file mode 100644
index 000000000..dc54013e6
--- /dev/null
+++ b/packages/field/test-suites/FormatMixin.suite.js
@@ -0,0 +1,401 @@
+import { expect, fixture, html, aTimeout, defineCE, unsafeStatic } from '@open-wc/testing';
+import sinon from 'sinon';
+
+import { LitElement } from '@lion/core';
+import { Unparseable } from '@lion/validate';
+import { FormatMixin } from '../src/FormatMixin.js';
+
+function mimicUserInput(formControl, newViewValue) {
+  formControl.value = newViewValue; // eslint-disable-line no-param-reassign
+  formControl.inputElement.dispatchEvent(new CustomEvent('input', { bubbles: true }));
+}
+
+export function runFormatMixinSuite(customConfig) {
+  // TODO: Maybe remove suffix
+  const cfg = {
+    tagString: null,
+    modelValueType: String,
+    suffix: '',
+    ...customConfig,
+  };
+
+  /**
+   * Mocks a value for you based on the data type
+   * Optionally toggles you a different value
+   * for needing to mimic a value-change.
+   *
+   * TODO: The FormatMixin can know about platform types like
+   * Date, but not about modelValue of input-iban etc.
+   * Make this concept expandable by allowing 'non standard'
+   * modelValues to hook into this.
+   */
+  function generateValueBasedOnType(opts = {}) {
+    const options = { type: cfg.modelValueType, toggleValue: false, viewValue: false, ...opts };
+
+    switch (options.type) {
+      case Number:
+        return !options.toggleValue ? '123' : '456';
+      case Date:
+        // viewValue instead of modelValue, since a Date object is unparseable.
+        // Note: this viewValue needs to point to the same date as the
+        // default returned modelValue.
+        if (options.viewValue) {
+          return !options.toggleValue ? '5-5-2005' : '10-10-2010';
+        }
+        return !options.toggleValue ? new Date('5-5-2005') : new Date('10-10-2010');
+      case Array:
+        return !options.toggleValue ? ['foo', 'bar'] : ['baz', 'yay'];
+      case Object:
+        return !options.toggleValue ? { foo: 'bar' } : { bar: 'foo' };
+      case Boolean:
+        return !options.toggleValue;
+      case 'email':
+        return !options.toggleValue ? 'some-user@ing.com' : 'another-user@ing.com';
+      case 'iban':
+        return !options.toggleValue ? 'SE3550000000054910000003' : 'CH9300762011623852957';
+      default:
+        return !options.toggleValue ? 'foo' : 'bar';
+    }
+  }
+
+  describe(`FormatMixin ${cfg.suffix ? `(${cfg.suffix})` : ''}`, async () => {
+    let elem;
+    let nonFormat;
+    let fooFormat;
+
+    before(async () => {
+      if (!cfg.tagString) {
+        cfg.tagString = defineCE(
+          class extends FormatMixin(LitElement) {
+            render() {
+              return html`
+                <slot name="input"></slot>
+              `;
+            }
+
+            set value(newValue) {
+              this.inputElement.value = newValue;
+            }
+
+            get value() {
+              return this.inputElement.value;
+            }
+
+            get inputElement() {
+              return this.querySelector('input');
+            }
+          },
+        );
+      }
+
+      elem = unsafeStatic(cfg.tagString);
+      nonFormat = await fixture(html`<${elem}
+        .formatter="${v => v}"
+        .parser="${v => v}"
+        .serializer="${v => v}"
+        .deserializer="${v => v}"
+      ><input slot="input">
+      </${elem}>`);
+      fooFormat = await fixture(html`
+      <${elem}
+        .formatter="${value => `foo: ${value}`}"
+        .parser="${value => value.replace('foo: ', '')}"
+        .serializer="${value => `[foo] ${value}`}"
+        .deserializer="${value => value.replace('[foo] ', '')}"
+      ><input slot="input">
+      </${elem}>`);
+    });
+
+    it('fires `model-value-changed` for every change on the input', async () => {
+      const formatEl = await fixture(html`<${elem}><input slot="input"></${elem}>`);
+
+      let counter = 0;
+      formatEl.addEventListener('model-value-changed', () => {
+        counter += 1;
+      });
+
+      mimicUserInput(formatEl, generateValueBasedOnType());
+      expect(counter).to.equal(1);
+
+      // Counter offset +1 for Date because parseDate created a new Date object
+      // when the user changes the value.
+      // This will result in a model-value-changed trigger even if the user value was the same
+      // TODO: a proper solution would be to add `hasChanged` to input-date, like isSameDate()
+      // from calendar utils
+      const counterOffset = cfg.modelValueType === Date ? 1 : 0;
+
+      mimicUserInput(formatEl, generateValueBasedOnType());
+      expect(counter).to.equal(1 + counterOffset);
+
+      mimicUserInput(formatEl, generateValueBasedOnType({ toggleValue: true }));
+      expect(counter).to.equal(2 + counterOffset);
+    });
+
+    it('fires `model-value-changed` for every modelValue change', async () => {
+      const el = await fixture(html`<${elem}><input slot="input"></${elem}>`);
+      let counter = 0;
+      el.addEventListener('model-value-changed', () => {
+        counter += 1;
+      });
+
+      el.modelValue = 'one';
+      expect(counter).to.equal(1);
+
+      // no change means no event
+      el.modelValue = 'one';
+      expect(counter).to.equal(1);
+
+      el.modelValue = 'two';
+      expect(counter).to.equal(2);
+    });
+
+    it('has modelValue, formattedValue and serializedValue which are computed synchronously', async () => {
+      expect(nonFormat.modelValue).to.equal('', 'modelValue initially');
+      expect(nonFormat.formattedValue).to.equal('', 'formattedValue initially');
+      expect(nonFormat.serializedValue).to.equal('', 'serializedValue initially');
+      const generatedValue = generateValueBasedOnType();
+      nonFormat.modelValue = generatedValue;
+      expect(nonFormat.modelValue).to.equal(generatedValue, 'modelValue as provided');
+      expect(nonFormat.formattedValue).to.equal(generatedValue, 'formattedValue synchronized');
+      expect(nonFormat.serializedValue).to.equal(generatedValue, 'serializedValue synchronized');
+    });
+
+    it('has an input node (like <input>/<textarea>) which holds the formatted (view) value', async () => {
+      fooFormat.modelValue = 'string';
+      expect(fooFormat.formattedValue).to.equal('foo: string');
+      expect(fooFormat.value).to.equal('foo: string');
+      expect(fooFormat.inputElement.value).to.equal('foo: string');
+    });
+
+    it('converts modelValue => formattedValue (via this.formatter)', async () => {
+      fooFormat.modelValue = 'string';
+      expect(fooFormat.formattedValue).to.equal('foo: string');
+      expect(fooFormat.serializedValue).to.equal('[foo] string');
+    });
+
+    it('converts modelValue => serializedValue (via this.serializer)', async () => {
+      fooFormat.modelValue = 'string';
+      expect(fooFormat.serializedValue).to.equal('[foo] string');
+    });
+
+    it('converts formattedValue => modelValue (via this.parser)', async () => {
+      fooFormat.formattedValue = 'foo: string';
+      expect(fooFormat.modelValue).to.equal('string');
+    });
+
+    it('converts serializedValue => modelValue (via this.deserializer)', async () => {
+      fooFormat.serializedValue = '[foo] string';
+      expect(fooFormat.modelValue).to.equal('string');
+    });
+
+    it('synchronizes inputElement.value as a fallback mechanism', async () => {
+      // Note that in lion-field, the attribute would be put on <lion-field>, not on <input>
+      const formatElem = await fixture(html`
+        <${elem}
+          value="string",
+          .formatter=${value => `foo: ${value}`}
+          .parser=${value => value.replace('foo: ', '')}
+          .serializer=${value => `[foo] ${value}`}
+          .deserializer=${value => value.replace('[foo] ', '')}
+          ><input slot="input" value="string"/></${elem}>`);
+      // Now check if the format/parse/serialize loop has been triggered
+      await formatElem.updateComplete;
+      expect(formatElem.formattedValue).to.equal('foo: string');
+
+      expect(formatElem.inputElement.value).to.equal('foo: string');
+
+      expect(formatElem.serializedValue).to.equal('[foo] string');
+      expect(formatElem.modelValue).to.equal('string');
+    });
+
+    it('reflects back formatted value to user on leave', async () => {
+      const formatEl = await fixture(html`
+        <${elem} .formatter="${value => `foo: ${value}`}">
+          <input slot="input" />
+        </${elem}>
+      `);
+
+      const generatedViewValue = generateValueBasedOnType({ viewValue: true });
+      const generatedModelValue = generateValueBasedOnType();
+      mimicUserInput(formatEl, generatedViewValue);
+      expect(formatEl.inputElement.value).to.not.equal(`foo: ${generatedModelValue}`);
+
+      // user leaves field
+      formatEl.inputElement.dispatchEvent(new CustomEvent(formatEl.formatOn, { bubbles: true }));
+      await aTimeout();
+      expect(formatEl.inputElement.value).to.equal(`foo: ${generatedModelValue}`);
+    });
+
+    it('reflects back .formattedValue immediately when .modelValue changed imperatively', async () => {
+      const el = await fixture(html`
+        <${elem} .formatter="${value => `foo: ${value}`}">
+          <input slot="input" />
+        </${elem}>
+      `);
+      // The FormatMixin can be used in conjunction with the ValidateMixin, in which case
+      // it can hold errorState (affecting the formatting)
+      el.errorState = true;
+
+      // users types value 'test'
+      mimicUserInput(el, 'test');
+      expect(el.inputElement.value).to.not.equal('foo: test');
+
+      // Now see the difference for an imperative change
+      el.modelValue = 'test2';
+      expect(el.inputElement.value).to.equal('foo: test2');
+    });
+
+    it('works if there is no underlying inputElement', async () => {
+      const tagNoInputString = defineCE(class extends FormatMixin(LitElement) {});
+      const tagNoInput = unsafeStatic(tagNoInputString);
+      expect(async () => {
+        await fixture(html`<${tagNoInput}></${tagNoInput}>`);
+      }).to.not.throw();
+    });
+
+    describe('parsers/formatters/serializers', () => {
+      it('should call the parser|formatter|serializer provided by user', async () => {
+        const formatterSpy = sinon.spy(value => `foo: ${value}`);
+        const parserSpy = sinon.spy(value => value.replace('foo: ', ''));
+        const serializerSpy = sinon.spy(value => `[foo] ${value}`);
+        const el = await fixture(html`
+          <${elem}
+            .formatter=${formatterSpy}
+            .parser=${parserSpy}
+            .serializer=${serializerSpy}
+            .modelValue=${'test'}
+          >
+            <input slot="input">
+          </${elem}>
+        `);
+        expect(formatterSpy.called).to.equal(true);
+        expect(serializerSpy.called).to.equal(true);
+
+        el.formattedValue = 'raw';
+        expect(parserSpy.called).to.equal(true);
+      });
+
+      it('should have formatOptions available in formatter', async () => {
+        const formatterSpy = sinon.spy(value => `foo: ${value}`);
+        const generatedViewValue = generateValueBasedOnType({ viewValue: true });
+        await fixture(html`
+          <${elem}
+            value="${generatedViewValue}"
+            .formatter="${formatterSpy}"
+            .formatOptions="${{ locale: 'en-GB', decimalSeparator: '-' }}">
+            <input slot="input" value="${generatedViewValue}">
+          </${elem}>
+        `);
+        expect(formatterSpy.args[0][1].locale).to.equal('en-GB');
+        expect(formatterSpy.args[0][1].decimalSeparator).to.equal('-');
+      });
+
+      it('will only call the parser for defined values', async () => {
+        const generatedValue = generateValueBasedOnType();
+        const parserSpy = sinon.spy();
+        const el = await fixture(html`
+          <${elem} .parser="${parserSpy}">
+            <input slot="input" value="${generatedValue}">
+          </${elem}>
+        `);
+
+        expect(parserSpy.callCount).to.equal(1);
+        // This could happen for instance in a reset
+        el.modelValue = undefined;
+        expect(parserSpy.callCount).to.equal(1);
+        // This could happen when the user erases the input value
+        mimicUserInput(el, '');
+        expect(parserSpy.callCount).to.equal(1);
+      });
+
+      it('will not return Unparseable when empty strings are inputted', async () => {
+        const el = await fixture(html`
+          <${elem}>
+            <input slot="input" value="string">
+          </${elem}>
+        `);
+        // This could happen when the user erases the input value
+        mimicUserInput(el, '');
+        // For backwards compatibility, we keep the modelValue an empty string here.
+        // Undefined would be more appropriate 'conceptually', however
+        expect(el.modelValue).to.equal('');
+      });
+
+      it('will only call the formatter for valid values on `user-input-changed` ', async () => {
+        const formatterSpy = sinon.spy(value => `foo: ${value}`);
+
+        const generatedModelValue = generateValueBasedOnType();
+        const generatedViewValue = generateValueBasedOnType({ viewValue: true });
+        const generatedViewValueAlt = generateValueBasedOnType({
+          viewValue: true,
+          toggleValue: true,
+        });
+
+        const el = await fixture(html`
+          <${elem} .formatter=${formatterSpy}>
+            <input slot="input" value="${generatedViewValue}">
+          </${elem}>
+        `);
+        expect(formatterSpy.callCount).to.equal(1);
+
+        el.errorState = true;
+        // Ensure errorState is always true by putting a validator on it that always returns false.
+        // Setting errorState = true is not enough if the element has errorValidators (uses ValidateMixin)
+        // that set errorState back to false when the user input is mimicked.
+        const alwaysInvalidator = () => ({ 'always-invalid': false });
+        el.errorValidators = [alwaysInvalidator];
+        mimicUserInput(el, generatedViewValueAlt);
+
+        expect(formatterSpy.callCount).to.equal(1);
+        // Due to errorState, the formatter should not have ran.
+        expect(el.formattedValue).to.equal(generatedViewValueAlt);
+
+        el.errorState = false;
+        el.errorValidators = [];
+        mimicUserInput(el, generatedViewValue);
+        expect(formatterSpy.callCount).to.equal(2);
+
+        expect(el.formattedValue).to.equal(`foo: ${generatedModelValue}`);
+      });
+    });
+
+    describe('Unparseable values', () => {
+      it('should convert to Unparseable when wrong value inputted by user', async () => {
+        const el = await fixture(html`
+          <${elem}
+            .parser=${viewValue => Number(viewValue) || undefined}
+          >
+            <input slot="input">
+          </${elem}>
+        `);
+        mimicUserInput(el, 'test');
+        expect(el.modelValue).to.be.an.instanceof(Unparseable);
+      });
+
+      it('should preserve the viewValue when not parseable', async () => {
+        const el = await fixture(html`
+          <${elem}
+            .parser=${viewValue => Number(viewValue) || undefined}
+          >
+            <input slot="input">
+          </${elem}>
+        `);
+        mimicUserInput(el, 'test');
+        expect(el.formattedValue).to.equal('test');
+        expect(el.value).to.equal('test');
+      });
+
+      it('should display the viewValue when modelValue is of type Unparseable', async () => {
+        const el = await fixture(html`
+          <${elem}
+            .parser=${viewValue => Number(viewValue) || undefined}
+          >
+            <input slot="input">
+          </${elem}>
+        `);
+        el.modelValue = new Unparseable('foo');
+        expect(el.value).to.equal('foo');
+      });
+    });
+  });
+}
diff --git a/packages/field/test/FormatMixin.test.js b/packages/field/test/FormatMixin.test.js
index aa004ca70..b20e5ced1 100644
--- a/packages/field/test/FormatMixin.test.js
+++ b/packages/field/test/FormatMixin.test.js
@@ -1,313 +1,3 @@
-import { expect, fixture, html, aTimeout, defineCE, unsafeStatic } from '@open-wc/testing';
-import sinon from 'sinon';
+import { runFormatMixinSuite } from '../test-suites/FormatMixin.suite.js';
 
-import { LitElement } from '@lion/core';
-import { Unparseable } from '@lion/validate';
-import { FormatMixin } from '../src/FormatMixin.js';
-
-function mimicUserInput(formControl, newViewValue) {
-  formControl.value = newViewValue; // eslint-disable-line no-param-reassign
-  formControl.inputElement.dispatchEvent(new CustomEvent('input', { bubbles: true }));
-}
-
-describe('FormatMixin', () => {
-  let elem;
-  let nonFormat;
-  let fooFormat;
-
-  before(async () => {
-    const tagString = defineCE(
-      class extends FormatMixin(LitElement) {
-        render() {
-          return html`
-            <slot name="input"></slot>
-          `;
-        }
-
-        set value(newValue) {
-          this.inputElement.value = newValue;
-        }
-
-        get value() {
-          return this.inputElement.value;
-        }
-
-        get inputElement() {
-          return this.querySelector('input');
-        }
-      },
-    );
-
-    elem = unsafeStatic(tagString);
-    nonFormat = await fixture(html`<${elem}><input slot="input"></${elem}>`);
-    fooFormat = await fixture(html`
-    <${elem}
-      .formatter="${value => `foo: ${value}`}"
-      .parser="${value => value.replace('foo: ', '')}"
-      .serializer="${value => `[foo] ${value}`}"
-      .deserializer="${value => value.replace('[foo] ', '')}"
-    ><input slot="input">
-    </${elem}>`);
-  });
-
-  it('fires `model-value-changed` for every change on the input', async () => {
-    const formatEl = await fixture(html`<${elem}><input slot="input"></${elem}>`);
-    let counter = 0;
-    formatEl.addEventListener('model-value-changed', () => {
-      counter += 1;
-    });
-
-    mimicUserInput(formatEl, 'one');
-    expect(counter).to.equal(1);
-
-    // no change means no event
-    mimicUserInput(formatEl, 'one');
-    expect(counter).to.equal(1);
-
-    mimicUserInput(formatEl, 'two');
-    expect(counter).to.equal(2);
-  });
-
-  it('fires `model-value-changed` for every modelValue change', async () => {
-    const el = await fixture(html`<${elem}><input slot="input"></${elem}>`);
-    let counter = 0;
-    el.addEventListener('model-value-changed', () => {
-      counter += 1;
-    });
-
-    el.modelValue = 'one';
-    expect(counter).to.equal(1);
-
-    // no change means no event
-    el.modelValue = 'one';
-    expect(counter).to.equal(1);
-
-    el.modelValue = 'two';
-    expect(counter).to.equal(2);
-  });
-
-  it('has modelValue, formattedValue and serializedValue which are computed synchronously', async () => {
-    expect(nonFormat.modelValue).to.equal('', 'modelValue initially');
-    expect(nonFormat.formattedValue).to.equal('', 'formattedValue initially');
-    expect(nonFormat.serializedValue).to.equal('', 'serializedValue initially');
-    nonFormat.modelValue = 'string';
-    expect(nonFormat.modelValue).to.equal('string', 'modelValue as provided');
-    expect(nonFormat.formattedValue).to.equal('string', 'formattedValue synchronized');
-    expect(nonFormat.serializedValue).to.equal('string', 'serializedValue synchronized');
-  });
-
-  it('has an input node (like <input>/<textarea>) which holds the formatted (view) value', async () => {
-    fooFormat.modelValue = 'string';
-    expect(fooFormat.formattedValue).to.equal('foo: string');
-    expect(fooFormat.value).to.equal('foo: string');
-    expect(fooFormat.inputElement.value).to.equal('foo: string');
-  });
-
-  it('converts modelValue => formattedValue (via this.formatter)', async () => {
-    fooFormat.modelValue = 'string';
-    expect(fooFormat.formattedValue).to.equal('foo: string');
-    expect(fooFormat.serializedValue).to.equal('[foo] string');
-  });
-
-  it('converts modelValue => serializedValue (via this.serializer)', async () => {
-    fooFormat.modelValue = 'string';
-    expect(fooFormat.serializedValue).to.equal('[foo] string');
-  });
-
-  it('converts formattedValue => modelValue (via this.parser)', async () => {
-    fooFormat.formattedValue = 'foo: string';
-    expect(fooFormat.modelValue).to.equal('string');
-  });
-
-  it('converts serializedValue => modelValue (via this.deserializer)', async () => {
-    fooFormat.serializedValue = '[foo] string';
-    expect(fooFormat.modelValue).to.equal('string');
-  });
-
-  it('synchronizes inputElement.value as a fallback mechanism', async () => {
-    // Note that in lion-field, the attribute would be put on <lion-field>, not on <input>
-    const formatElem = await fixture(html`
-      <${elem}
-        value="string",
-        .formatter=${value => `foo: ${value}`}
-        .parser=${value => value.replace('foo: ', '')}
-        .serializer=${value => `[foo] ${value}`}
-        .deserializer=${value => value.replace('[foo] ', '')}
-        ><input slot="input" value="string"/></${elem}>`);
-    // Now check if the format/parse/serialize loop has been triggered
-    await aTimeout();
-    expect(formatElem.formattedValue).to.equal('foo: string');
-    expect(formatElem.inputElement.value).to.equal('foo: string');
-    expect(formatElem.serializedValue).to.equal('[foo] string');
-    expect(formatElem.modelValue).to.equal('string');
-  });
-
-  it('reflects back formatted value to user on leave', async () => {
-    const formatEl = await fixture(html`
-      <${elem} .formatter="${value => `foo: ${value}`}">
-        <input slot="input" />
-      </${elem}>
-    `);
-    // users types value 'test'
-    mimicUserInput(formatEl, 'test');
-    expect(formatEl.inputElement.value).to.not.equal('foo: test');
-    // user leaves field
-    formatEl.inputElement.dispatchEvent(new CustomEvent(formatEl.formatOn, { bubbles: true }));
-    await aTimeout();
-    expect(formatEl.inputElement.value).to.equal('foo: test');
-  });
-
-  it('reflects back .formattedValue immediately when .modelValue changed imperatively', async () => {
-    const el = await fixture(html`
-      <${elem} .formatter="${value => `foo: ${value}`}">
-        <input slot="input" />
-      </${elem}>
-    `);
-    // The FormatMixin can be used in conjunction with the ValidateMixin, in which case
-    // it can hold errorState (affecting the formatting)
-    el.errorState = true;
-
-    // users types value 'test'
-    mimicUserInput(el, 'test');
-    expect(el.inputElement.value).to.not.equal('foo: test');
-
-    // Now see the difference for an imperative change
-    el.modelValue = 'test2';
-    expect(el.inputElement.value).to.equal('foo: test2');
-  });
-
-  it('works if there is no underlying inputElement', async () => {
-    const tagNoInputString = defineCE(class extends FormatMixin(LitElement) {});
-    const tagNoInput = unsafeStatic(tagNoInputString);
-    expect(async () => {
-      await fixture(html`<${tagNoInput}></${tagNoInput}>`);
-    }).to.not.throw();
-  });
-
-  describe('parsers/formatters/serializers', () => {
-    it('should call the parser|formatter|serializer provided by user', async () => {
-      const formatterSpy = sinon.spy(value => `foo: ${value}`);
-      const parserSpy = sinon.spy(value => value.replace('foo: ', ''));
-      const serializerSpy = sinon.spy(value => `[foo] ${value}`);
-      const el = await fixture(html`
-        <${elem}
-          .formatter=${formatterSpy}
-          .parser=${parserSpy}
-          .serializer=${serializerSpy}
-          .modelValue=${'test'}
-        >
-          <input slot="input">
-        </${elem}>
-      `);
-      expect(formatterSpy.called).to.equal(true);
-      expect(serializerSpy.called).to.equal(true);
-
-      el.formattedValue = 'raw';
-      expect(parserSpy.called).to.equal(true);
-    });
-
-    it('should have formatOptions available in formatter', async () => {
-      const formatterSpy = sinon.spy(value => `foo: ${value}`);
-      await fixture(html`
-        <${elem}
-          value="string",
-          .formatter="${formatterSpy}"
-          .formatOptions="${{ locale: 'en-GB', decimalSeparator: '-' }}">
-          <input slot="input" value="string">
-        </${elem}>`);
-      await aTimeout();
-      expect(formatterSpy.args[0][1].locale).to.equal('en-GB');
-      expect(formatterSpy.args[0][1].decimalSeparator).to.equal('-');
-    });
-
-    it('will only call the parser for defined values', async () => {
-      const parserSpy = sinon.spy();
-      const el = await fixture(html`
-        <${elem} .parser="${parserSpy}">
-          <input slot="input" value="string">
-        </${elem}>
-      `);
-      el.modelValue = 'foo';
-      expect(parserSpy.callCount).to.equal(1);
-      // This could happen for instance in a reset
-      el.modelValue = undefined;
-      expect(parserSpy.callCount).to.equal(1);
-      // This could happen when the user erases the input value
-      mimicUserInput(el, '');
-      expect(parserSpy.callCount).to.equal(1);
-    });
-
-    it('will not return Unparseable when empty strings are inputted', async () => {
-      const el = await fixture(html`
-        <${elem}>
-          <input slot="input" value="string">
-        </${elem}>
-      `);
-      // This could happen when the user erases the input value
-      mimicUserInput(el, '');
-      // For backwards compatibility, we keep the modelValue an empty string here.
-      // Undefined would be more appropriate 'conceptually', however
-      expect(el.modelValue).to.equal('');
-    });
-
-    it('will only call the formatter for valid values on `user-input-changed` ', async () => {
-      const formatterSpy = sinon.spy(value => `foo: ${value}`);
-      const el = await fixture(html`
-        <${elem} .formatter=${formatterSpy}>
-          <input slot="input" value="init-string">
-        </${elem}>
-      `);
-      expect(formatterSpy.callCount).to.equal(1);
-
-      el.errorState = true;
-      mimicUserInput(el, 'bar');
-      expect(formatterSpy.callCount).to.equal(1);
-      expect(el.formattedValue).to.equal('bar');
-
-      el.errorState = false;
-      mimicUserInput(el, 'bar2');
-      expect(formatterSpy.callCount).to.equal(2);
-
-      expect(el.formattedValue).to.equal('foo: bar2');
-    });
-  });
-
-  describe('Unparseable values', () => {
-    it('should convert to Unparseable when wrong value inputted by user', async () => {
-      const el = await fixture(html`
-        <${elem}
-          .parser=${viewValue => Number(viewValue) || undefined}
-        >
-          <input slot="input">
-        </${elem}>
-      `);
-      mimicUserInput(el, 'test');
-      expect(el.modelValue).to.be.an.instanceof(Unparseable);
-    });
-
-    it('should preserve the viewValue when not parseable', async () => {
-      const el = await fixture(html`
-        <${elem}
-          .parser=${viewValue => Number(viewValue) || undefined}
-        >
-          <input slot="input">
-        </${elem}>
-      `);
-      mimicUserInput(el, 'test');
-      expect(el.formattedValue).to.equal('test');
-      expect(el.value).to.equal('test');
-    });
-
-    it('should display the viewValue when modelValue is of type Unparseable', async () => {
-      const el = await fixture(html`
-        <${elem}
-          .parser=${viewValue => Number(viewValue) || undefined}
-        >
-          <input slot="input">
-        </${elem}>
-      `);
-      el.modelValue = new Unparseable('foo');
-      expect(el.value).to.equal('foo');
-    });
-  });
-});
+runFormatMixinSuite();
diff --git a/packages/field/test/field-integrations.test.js b/packages/field/test/field-integrations.test.js
index ada7fdece..5395b40c2 100644
--- a/packages/field/test/field-integrations.test.js
+++ b/packages/field/test/field-integrations.test.js
@@ -1,6 +1,7 @@
 import { defineCE } from '@open-wc/testing';
 import { runInteractionStateMixinSuite } from '../test-suites/InteractionStateMixin.suite.js';
 import '../lion-field.js';
+import { runFormatMixinSuite } from '../test-suites/FormatMixin.suite.js';
 
 const fieldTagString = defineCE(
   class extends customElements.get('lion-field') {
@@ -19,4 +20,8 @@ describe('<lion-field> integrations', () => {
     tagString: fieldTagString,
     suffix: 'lion-field',
   });
+
+  runFormatMixinSuite({
+    tagString: fieldTagString,
+  });
 });
diff --git a/packages/input-amount/test/lion-input-amount-integrations.test.js b/packages/input-amount/test/lion-input-amount-integrations.test.js
new file mode 100644
index 000000000..bac7c1d31
--- /dev/null
+++ b/packages/input-amount/test/lion-input-amount-integrations.test.js
@@ -0,0 +1,18 @@
+import { runInteractionStateMixinSuite } from '@lion/field/test-suites/InteractionStateMixin.suite.js';
+import { runFormatMixinSuite } from '@lion/field/test-suites/FormatMixin.suite.js';
+import '../lion-input-amount.js';
+
+const tagString = 'lion-input-amount';
+
+describe('<lion-input-amount> integrations', () => {
+  runInteractionStateMixinSuite({
+    tagString,
+    suffix: 'lion-input-amount',
+    allowedModelValueTypes: [Number],
+  });
+
+  runFormatMixinSuite({
+    tagString,
+    modelValueType: Number,
+  });
+});
diff --git a/packages/input-date/test/lion-input-date-integrations.test.js b/packages/input-date/test/lion-input-date-integrations.test.js
index 876432f70..6558ea8da 100644
--- a/packages/input-date/test/lion-input-date-integrations.test.js
+++ b/packages/input-date/test/lion-input-date-integrations.test.js
@@ -1,10 +1,18 @@
 import { runInteractionStateMixinSuite } from '@lion/field/test-suites/InteractionStateMixin.suite.js';
+import { runFormatMixinSuite } from '@lion/field/test-suites/FormatMixin.suite.js';
 import '../lion-input-date.js';
 
+const tagString = 'lion-input-date';
+
 describe('<lion-input-date> integrations', () => {
   runInteractionStateMixinSuite({
-    tagString: 'lion-input-date',
-    suffix: 'lion-input-date',
+    tagString,
+    suffix: tagString,
     allowedModelValueTypes: [Date],
   });
+
+  runFormatMixinSuite({
+    tagString,
+    modelValueType: Date,
+  });
 });
diff --git a/packages/input-datepicker/test/lion-input-datepicker-integrations.test.js b/packages/input-datepicker/test/lion-input-datepicker-integrations.test.js
index 773a70b95..4a37eadc9 100644
--- a/packages/input-datepicker/test/lion-input-datepicker-integrations.test.js
+++ b/packages/input-datepicker/test/lion-input-datepicker-integrations.test.js
@@ -1,10 +1,17 @@
 import { runInteractionStateMixinSuite } from '@lion/field/test-suites/InteractionStateMixin.suite.js';
+import { runFormatMixinSuite } from '@lion/field/test-suites/FormatMixin.suite.js';
 import '../lion-input-datepicker.js';
 
+const tagString = 'lion-input-datepicker';
 describe('<lion-input-datepicker> integrations', () => {
   runInteractionStateMixinSuite({
-    tagString: 'lion-input-datepicker',
-    suffix: 'lion-input-datepicker',
+    tagString,
+    suffix: tagString,
     allowedModelValueTypes: [Date],
   });
+
+  runFormatMixinSuite({
+    tagString,
+    modelValueType: Date,
+  });
 });
diff --git a/packages/input-email/test/lion-input-email-integrations.test.js b/packages/input-email/test/lion-input-email-integrations.test.js
new file mode 100644
index 000000000..6e378a548
--- /dev/null
+++ b/packages/input-email/test/lion-input-email-integrations.test.js
@@ -0,0 +1,11 @@
+import { runFormatMixinSuite } from '@lion/field/test-suites/FormatMixin.suite.js';
+import '../lion-input-email.js';
+
+const tagString = 'lion-input-email';
+
+describe('<lion-input-email> integrations', () => {
+  runFormatMixinSuite({
+    tagString,
+    modelValueType: 'email',
+  });
+});
diff --git a/packages/input-iban/src/validators.js b/packages/input-iban/src/validators.js
index 0530c3afc..a05b5a1f6 100644
--- a/packages/input-iban/src/validators.js
+++ b/packages/input-iban/src/validators.js
@@ -1,6 +1,8 @@
 import { isValidIBAN } from '@bundled-es-modules/ibantools/ibantools.js';
 
-export const isIBAN = value => isValidIBAN(value);
+export const isIBAN = value => {
+  return isValidIBAN(value);
+};
 
 export const isIBANValidator = () => [(...params) => ({ isIBAN: isIBAN(...params) })];
 
diff --git a/packages/input-iban/test/lion-input-iban-integrations.test.js b/packages/input-iban/test/lion-input-iban-integrations.test.js
new file mode 100644
index 000000000..b175f0f63
--- /dev/null
+++ b/packages/input-iban/test/lion-input-iban-integrations.test.js
@@ -0,0 +1,11 @@
+import { runFormatMixinSuite } from '@lion/field/test-suites/FormatMixin.suite.js';
+import '../lion-input-iban.js';
+
+const tagString = 'lion-input-iban';
+
+describe('<lion-input-iban> integrations', () => {
+  runFormatMixinSuite({
+    tagString,
+    modelValueType: 'iban',
+  });
+});
diff --git a/packages/input/test/lion-input-integrations.test.js b/packages/input/test/lion-input-integrations.test.js
index fc43b75aa..be3682564 100644
--- a/packages/input/test/lion-input-integrations.test.js
+++ b/packages/input/test/lion-input-integrations.test.js
@@ -1,9 +1,16 @@
 import { runInteractionStateMixinSuite } from '@lion/field/test-suites/InteractionStateMixin.suite.js';
+import { runFormatMixinSuite } from '@lion/field/test-suites/FormatMixin.suite.js';
 import '../lion-input.js';
 
+const tagString = 'lion-input';
+
 describe('<lion-input> integrations', () => {
   runInteractionStateMixinSuite({
-    tagString: 'lion-input',
+    tagString,
     suffix: 'lion-input',
   });
+
+  runFormatMixinSuite({
+    tagString,
+  });
 });
diff --git a/packages/textarea/test/lion-input-iban-integrations.test.js b/packages/textarea/test/lion-input-iban-integrations.test.js
new file mode 100644
index 000000000..9b00753e3
--- /dev/null
+++ b/packages/textarea/test/lion-input-iban-integrations.test.js
@@ -0,0 +1,10 @@
+import { runFormatMixinSuite } from '@lion/field/test-suites/FormatMixin.suite.js';
+import '../lion-textarea.js';
+
+const tagString = 'lion-textarea';
+
+describe('<lion-textarea> integrations', () => {
+  runFormatMixinSuite({
+    tagString,
+  });
+});